she has sold more albums in the u.s. over those six years than any other artist in any genre. her latest album, "red," sold more copies in its first week than any album in more than a decade. taylor swift's has been a meteoric rise. she seems to know, even at a young age, just the right notes to hit-- in her songwriting, and in her business. in an era of declining record sales, taylor swift appeals to people who still pay a lot for music, girls and their moms. she's held onto her country fans even as she's gotten huge in pop. and then there's her image-- lots of publicity about her short-lived, high-profile romances, but never a drunken rampage, a public outburst, or a scandalous photo. we caught up with her late last year on the road for her "speak now" tour. ( cheers and applause ) take a look at the crowd at the staples center in los angeles, where taylor swift sold out four shows within minutes. >> taylor swift: well, good evening, los angeles! ( fans screaming ) >> stahl: the decibel level here reminds you of the beatles. it's almost as if she's their spiritual leader, wi